Engine-starting mechanism.



W. H. BUNCH. ENGINE STARTING MECHANISM.

APPLICATION FILED MAR. 4, I915.

COLUMBIA PLANoGRAPr-l Co., WASHINGTON, D. c.

W. H. BUNCH. ENGINE STARTING MECHANISM.

APPLICATION FILED MAR. 4' I915.

Patented Aug. 17, 1915.

2 SHEETSSHEET 2.

WILLIAM H. BUNCH, OF CONNELL, WASHINGTON.

ENGINE-STARTING MECHANISM.

Specification of Letters Patent.

Patented Aug. 17, 1.915.

Application filed March 4, 1915. Serial No. 11,991.

b all whom it may concern Be it knownthat 1, WILLIAM H. BUNCH, a citizenof the Unlted States,.res1d1ng at Connell, in the county of Franklin andState of \Vashington, have invented a new and useful Engine-StartingMechanism, and I do hereby declare the following to be a full, clear,and exact description of the invention such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to an improved starting mechanism for internalcombustion engines, and an object of the invention is to provide asimple, eflicient and practical device of this nature, in which a smalli11- ternal combustion motor is utilized having its crank shaft coupledto another shaft which is provided with a pinion meshing with a largerpinion carried by a shaft journaled in a frame, which is mounted tooscillate on the shaft of the pinion. The shaft on which the larger gearis loosely mounted, is provided with a friction wheel having ratchetclutch connections with the larger gear, so that when revoluble motionis imparted to the larger gear, a corresponding movement is imparted tothe friction wheel, which in turn frictionally imparts movement to thelarge fly wheel of a large motor or gas engine, that is, when theoscillatory frame is oscillated.

In practical fields the details of construction may necessitatealterations, falling within the scope of what is claimed.

The invention comprises further features and combination of parts, ashereinafter set forth, shown in the drawings and claimed.

In the drawings :Figure 1 is a view in side elevation of a portion of alarge gas engine, and illustrating the smaller and substantially two anda half horse power motor having connections with the large fly wheel ofthe gas engine for starting the same. Fig. 2 is a plan view of thestarting mechanism as applied to the large fly wheel of the gas engine.Fig. 3 is a view in front elevation of the improved starting mechanismand the small motor, showing the large fly wheel in the rear. Fig. 4: isan enlarged side elevation of the larger gear, showing parts in sectionand illustrating the clutch connections between the friction wheel ordrum and the larger gear. Figs. 5 and 6 are detail views.

Referring more especially to the drawings, 1 designates a small internalcombustion motor provided with the usual fly wheel 2, and crank shaft3,.which shaft has a coupled connection 4 with a shaft 5. Secured at 6to the foundation (on which the gas engine structure and the motorstructure 1 rest) are bearing brackets 7 and 8, and bolted upon thebrackets by the bolts 9 are the bearing blocks 10, in which the shaft 5is mounted, there being cap plates 11 to hold the shaft 5 in. place,said plates being also bolted to the blocks by the bolts 9.Correspondingly shaped oppositely disposed levers 12 are provided, andtheir lower ends terminate in bearing blocks 13 having cap plates 1 1bolted thereto by the bolts 15. Between the bearing blocks 13 and thecap plates 14: the shaft 5 passes, therefore it will be observed thatthe levers 12 are pivotally mounted upon the shaft 5 so as to oscillate.The upper ends of the levers 12 terminate in bearing blocks 16 havingcap plates 17 bolted at 18, and mounted in said bearing blocks 16 andcovered by the cap plates is a shaft 18, loosely on which is a gear 19,which meshes with a smaller gear or pinion 20 mounted to rotate with theshaft 5. -Keyeol to rotate with the shaft 18 is a friction wheel or drum21, the inner circumference of which at one end thereof is provided withratchet teeth 22. The outer periphery of the drum is preferably providedwith a leather or other fiber covering 23, so as to increase thefriction between the drum and the large fly wheel 24 of a large gasengine of conventional construction, as shown at 25. Pivotally mountedat 26 on a plate or disk 27 of the hub portion of the gear 19 are thespring retained pawls 28, which are designed to cooperate with theratchet teeth 22 of the drum, so that when the gear 19 is rotated thedrum will revolve therewith, and when the drum is moved so that itsfiber periphery will contact with the periphery of the fly wheel 24:,the gas engine 25 will be operated or started.

Pivoted at 30 to the bearing blocks 16, and converging toward each otherare links 31, the converging ends of the links 31 are pivoted at 32 tothe short arm 33 of the lever 3%, which is pivotally mounted upon theshaft 35, which in turn is mounted in bearings of the frame 36. Pivotedat 37 to the lower part of a quadrant 38 is a lever 39 having a linkconnection lO with the long arm 41 of said lever 3-1. It is to be notedthat the lever 39 is provided with a dog 42 to engage the teeth of thequadrant 38 to hold the lever 39 in adjusted position, there being ahand grip 44: for manipulating the dog, whereby the lever 39 may beadjusted. By moving the lever 39 in the direction of the arrow at, thelever 34 will be oscillated upon its fulcrum, in turn oscillating thelevers 12 through the medium of the links 31, thereby throwing thefriction drum in contact with the periphery of the fly wheel 24 of thegas engine, thereby starting the same, that is, subsequently to startingthe small motor 1.

The invention having been set forth, what isclaimed as new and useful is2-- In combination with a motor driven shaft provided with a gear,bearings for said shaft, a pair of correspondingly constructedoppositely disposed arms mounted upon said shaft to operate therewith,an auxiliary shaft connecting the arms and mounted in bearings in theupper ends thereof, a gear loosely mounted upon the auxiliary shaftbetween the arms, a friction drum fixed to the auxiliary shaft betweenthe arms, clutch means between the drum and the gear of the auxiliaryshaft, which gear of the auxiliary shaft meshes with the first gear, apair of links pivoted to the bearings of the upper ends of said arms andconverging toward each other, a frame, an oscillatory lever pivotedinthe frame having a short arm to which the converging ends of the linksare connected and provided with a long arm, and means connected to thelong arm for oscillating the oscillatory lever on its fulcrum, wherebythe drum may be thrown into frictional contact with the fly' wheel of agas engine.

In testimony whereof I have signed my name to this specification inthepresence of two subscribingwitnesses.

WILLIAM H. BUNCH.

Copies of this patent may be obtained for five cents eaclnby addressingthe Commissioner of Patents, Washington, D. G.

